Dental scan arms and dental scanning systems

Abstract

This disclosure relates to a dental scanning bar and a dental scanning system. The dental scanning bar includes: an attachment (100) configured to attach the scanning bar to an implant or implant abutment located in the oral cavity; and a scanning section (200) including an elongated body extending laterally from the attachment (100), the elongated body including a length direction and a width direction, and including a top surface (202) and a bottom surface (204) opposite to the top surface (202), the top surface (202) including a plurality of identification surfaces that assist scanning when scanning the scanning bar using a scanning device; wherein the scanning section (200) includes at least one boss and / or recess (410, 420) protruding and / or recessed from the top surface (202), the boss and / or recess (410, 420) being shaped as a pyramid or truncated pyramid and the projection of each cone face of the pyramid or truncated pyramid onto the top surface (202) forms an identification surface.

Description

Technical Field

[0001] This disclosure relates to the field of dental implants, and particularly to a dental scanning bar for oral scanning. Background Technology

[0002] In dental implant surgery, dentists first surgically insert the implant (or abutment) into the dental arch. After the implant is placed in the arch, its precise position needs to be determined to fabricate the prosthesis. Intraoral scanning technology and digital impressions are increasingly used to accurately determine the implant's location.

[0003] To accurately position implants, a scanning bar fixed to the implant is required. One end of the scanning bar has an attachment for securing it to the implant, while the other end has a recognition plate that provides scanning features. During use, the scanning bar needs to be placed inside the patient's mouth. Because the prosthesis needs to fit precisely with the implant or abutment, the structure of the scanning bar plays a crucial role in accurate scanning. It is hoped that the structure of traditional scanning bars can be improved to further enhance scanning accuracy. Summary of the Invention

[0004] The purpose of this disclosure is to provide a dental scanning bar that addresses one or more of the problems described above, as well as other potential problems.

[0005] One aspect of this disclosure provides a dental scanning bar. The dental scanning bar includes: an attachment portion configured to attach the scanning bar to an implant or implant abutment located in the oral cavity; and a scanning portion including an elongated body extending laterally from the attachment portion, the elongated body including a length direction and a width direction, and including a top surface and a bottom surface opposite to the top surface, the top surface including a plurality of identification surfaces that assist scanning when scanning the scanning bar using a scanning device; wherein the scanning portion includes at least one boss and / or recess protruding from the top surface, the boss and / or recess being shaped into a pyramid or truncated pyramid shape and the projection of each cone face of the pyramid or truncated pyramid onto the top surface forms the identification surface.

[0006] In some embodiments, at least one of the bosses and / or recesses is formed in the shape of a truncated pyramid, and the corresponding edge of the top surface of the boss and / or recess in the width direction is separated from at least one side of the scanning portion in the width direction by a first separation distance; wherein the area where the first separation distance is located is formed as at least one first chamfer connecting the corresponding edge of the top surface of the boss and / or recess and the at least one side of the scanning portion, and the angle formed by the first chamfer with respect to the projection plane is in the range of 30° to 70°.

[0007] In some embodiments, the corresponding edges of the top surfaces of the boss and / or the recess in the width direction are separated from the two sides of the scanning portion in the width direction by the first separation distance, wherein the regions where the first separation distance is located are each formed as the first bevel surface.

[0008] In some embodiments, at least one of the bosses and / or recesses is arranged alternately with at least one platform area along the length direction, the at least one platform area having a different height relative to at least one of the bosses and / or recesses.

[0009] In some embodiments, the top surface of the platform region has a polygonal profile with at least four sides, and the corresponding edge of the top surface of the platform region in the width direction is separated from at least one side of the scanning part in the width direction by a second separation distance. The area where the second separation distance is located is formed as at least one second oblique surface connecting the corresponding edge of the top surface of the platform region in the width direction and the at least one side of the scanning part. The angle formed by the second oblique surface with respect to the projection plane is in the range of 30° to 70°.

[0010] In some embodiments, the corresponding edge of the top surface of the platform region in the width direction is separated from the two sides of the scanning part in the width direction by the second separation distance, wherein the area where the second separation distance is located is respectively formed as the second bevel surface.

[0011] In some embodiments, the scanning portion includes at least two bosses and / or recesses, wherein a first boss and / or recess adjacent to the attachment portion has a fourth width in the width direction as its maximum width in the width direction, and a second boss and / or recess away from the attachment portion has a fifth width in the width direction as its maximum width in the width direction, wherein the fourth width is smaller than the fifth width.

[0012] In some embodiments, the scanning portion has a second width in the width direction as its maximum width in the width direction, and the attachment portion has a first width in the width direction as its maximum width, wherein the second width is greater than the first width.

[0013] In some embodiments, the scanning section includes a first scanning area adjacent to the attachment section and a second scanning area away from the attachment section, wherein the first scanning area has a third width in the width direction as its maximum width in the width direction, the second scanning area has a maximum width in the width direction as the second width, and the third width is less than the second width.

[0014] In some embodiments, the second scanning area includes a first end adjacent to the first scanning area and a second end away from the first scanning area, and the second scanning area includes a first size reduction portion, the width of the first size reduction portion in the width direction gradually decreasing from the region adjacent to the first end toward the region adjacent to the second end.

[0015] In some embodiments, the second scanning area further includes a second size reduction portion located at the second end, the width of the second size reduction portion gradually decreasing from the region adjacent to the first size reduction portion toward the end region adjacent to the scanning area in the width direction.

[0016] In some embodiments, the region where the second size reduction portion is located is formed as a third oblique surface, and the angle between the third oblique surface and the projection plane is in the range of 30° to 70°.

[0017] In some embodiments, the second scan area further includes a transition scan area that transitions from the first scan area to the second scan area, wherein the width of the transition scan area in the width direction gradually decreases from the region adjacent to the first scan area toward the region adjacent to the second scan area.

[0018] In some embodiments, the transition scanning area includes a platform area and at least one fourth oblique surface disposed at at least one edge in the width direction of the platform area. The top surface of the platform area is formed as a flat surface parallel to the projection plane or as an oblique surface at an angle to the projection plane. The angle between the fourth oblique surface and the projection plane is in the range of 30° to 70°.

[0019] In some embodiments, the attachment portion includes an attachment area and a surrounding area on its top surface, the attachment area including a central hole, and the surrounding area including at least one beveled surface at an angle to the projection plane.

[0020] In some embodiments, at least one edge of the top surface and / or bottom surface of the elongated body is chamfered and / or blunted.

[0021] Another aspect of this disclosure provides a dental scanning system. The dental scanning system includes: an oral scanner; at least two dental scanning rods according to any one of the first aspects, wherein the elongated bodies of the first and second dental scanning rods of the at least two dental scanning rods have different lengths.

[0022] In some embodiments, at least one bevel provided in the first dental scanning bar has an angle different from that of a corresponding bevel provided at a corresponding position in the second dental scanning bar.

[0023] According to this disclosure, the modeling accuracy during digital scanning can be improved, and the number and / or area of ​​the scanning bar's recognition surface can be further increased without interfering with the scanning bar and adjacent scanning bars and / or oral tissue. Attached Figure Description

[0024] The above and other objects, features, and advantages of embodiments of the present disclosure will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated in the drawings by way of example and not limitation.

[0025] Figure 1 A three-dimensional schematic diagram of a dental scanning bar according to a first embodiment of the present disclosure is shown;

[0026] Figure 2 A top view schematic diagram of a dental scanning bar according to a first embodiment of the present disclosure is shown;

[0027] Figure 3 A cross-sectional schematic diagram of a dental scanning bar according to a first embodiment of the present disclosure is shown;

[0028] Figure 4 A general perspective view of a dental scanning bar according to a second embodiment of the present disclosure is shown;

[0029] Figure 5 A top view schematic diagram of a dental scanning bar according to a second embodiment of the present disclosure is shown;

[0030] Figure 6 A general perspective view of a dental scanning bar according to a third embodiment of the present disclosure is shown;

[0031] Figure 7 A top view schematic diagram of a dental scanning bar according to a third embodiment of the present disclosure is shown;

[0032] Figure 8 A side view schematic diagram of a dental scanning bar according to a third embodiment of the present disclosure is shown;

[0033] Figure 9A side view schematic diagram of a dental scanning bar according to a fourth embodiment of the present disclosure is shown; and

[0034] Figure 10 A cross-sectional schematic diagram of a dental scanning bar according to a first embodiment of the present disclosure is shown.

[0035] In the various figures, the same or corresponding reference numerals indicate the same or corresponding parts. Detailed Implementation

[0036] Unless otherwise specified, corresponding numbers and symbols in the different figures generally refer to corresponding areas. The figures are drawn to clearly illustrate relevant aspects of the embodiments and are not necessarily drawn to scale. The edges of features drawn in the figures do not necessarily indicate the termination of the feature range.

[0037] References to "an embodiment" or "an implementation" within the framework of this specification are intended to indicate that a particular configuration, structure, or feature described with respect to that embodiment is included in at least one embodiment. Therefore, phrases such as "in an embodiment," "in one embodiment," etc., that may appear in various aspects of this specification do not necessarily refer precisely to the same embodiment. Furthermore, specific configurations, structures, or features may be combined in any suitable manner in one or more embodiments.

[0038] Figures 1-3 A schematic diagram of a dental scanning arm 1 according to a first embodiment of the present disclosure is shown. Figures 1-3 As shown, the dental scanning bar 1 includes an attachment portion 100 and a scanning portion 200. The attachment portion 100 and the scanning portion 200 can be integrally formed. The scanning portion 200 includes an elongated body extending laterally from the attachment portion 100. The attachment portion 100 has a longitudinal direction. Figure 3 The cross-sectional view shown has the longitudinal direction roughly corresponding to the vertical direction. The attachment portion 100 may include a cylindrical portion 130 extending in the longitudinal direction, the cylindrical portion 130 having a central hole 102 extending through the top surface 105 of the attachment portion 100. The central hole 102 is adapted to receive a fastening screw, which can be used to secure the scanning rod 1 to the implant (or implant abutment, not shown). In the illustrated embodiment, the central hole 102 includes multiple hole segments of different sizes; it should be understood that the illustrated embodiment is merely exemplary, and the central hole 102 can be formed in any other suitable shape. Given that these structures are well known in the art, detailed descriptions thereof are omitted. The focus will be on features related to the scanning rod that improve scanning accuracy.

[0039] like Figures 1-3As shown, the scanning unit 200 is generally elongated in shape and may include a top surface 202 and a bottom surface 204 opposite to the top surface 202. The projection plane corresponds to the top view angle of the scanning lever 1. When the scanning lever 1 is fixed together with the implant, the top surface 202 is an area that can be observed or scanned. In this case, the top surface 202 of the scanning unit 200 corresponds to the projection surface. The top surface 202 includes multiple recognition surfaces (described in detail later) that assist in scanning when scanning the scanning lever using an oral scanning device (e.g., an oral scanner).

[0040] The attachment 100 can be of various shapes, as long as it is suitable for mounting to a groove on the dental arch. In some embodiments, such as Figures 1-3 As shown, the attachment portion 100 is generally rectangular in shape. In other embodiments, the attachment portion 100 may also be circular, elliptical, or other suitable shapes. The scanning portion 200 has an elongated body extending laterally from the attachment portion 100. The elongated body has a length direction and a width direction. The length of the scanning portion 200 is significantly greater than its width in the length direction. This is particularly suitable for increasing the area of ​​the scanning portion 200 used for scanning, which is suitable, for example, for applications requiring implantation of a full set of teeth. The length of the scanning portion 200 can be designed to be several times the width of the attachment portion 100, for example, more than 2 times, such as 3 times, 5 times, 8 times, etc.

[0041] In some embodiments, such as Figures 1-3 As shown, the scanning unit 200 includes at least one boss and / or recess 410, 420 protruding from and / or recessed from the top surface 202. In the illustrated embodiment, the number of bosses 410, 420 is two. It should be understood that the illustrated embodiment is merely exemplary, and the number of bosses 410, 420 may be one or more.

[0042] In the illustrated embodiment, the protrusions 410, 420, serving as identification features, are shown as protrusions projecting from the top surface; this should be understood as merely exemplary. In embodiments not shown, instead of protrusions, recesses projecting from the top surface can be used as identification features. In other embodiments not shown, a combination of protrusions and recesses may be employed. The following description uses examples of protrusions as identification features; it should be understood that the description of protrusions also applies to the description of recesses.

[0043] In some embodiments, the bosses and / or recesses 410, 420 are shaped into a pyramid or truncated pyramid, and the projection of each pyramidal facet onto the top surface 202 forms the recognition surface. The pyramid or truncated pyramid may utilize its boundary with the top surface, side surfaces, and / or bottom surface of the scanning bar, and / or the boundary formed by the shape of the pyramid or truncated pyramid itself and the top surface to construct the recognition surface for scanning.

[0044] In the illustrated embodiment, the boss 410 is formed in the shape of a truncated square pyramid, and each boss 410 provides five recognition faces 411, 412, 413, 414, and 415 by virtue of its own shape and its junction with the top surface 202. Similarly, the boss 420 is formed in the shape of a truncated square pyramid, and each boss 410 provides five recognition faces 421, 422, 423, 424, and 425. In some other embodiments, the bosses may also form recognition faces together with the top surfaces 411 and 421 of the bosses and the edges and / or surface features of the scanning bar (e.g., the lateral sides of the scanning bar or the bottom surface of the scanning bar) (see later). Figures 4-8 (Detailed description of other embodiments shown).

[0045] In the illustrated embodiments, the boss can be formed as a three-fold pyramid, a five-fold pyramid, or other number of truncated pyramids. It should be understood that the illustrated embodiments are merely exemplary. In some embodiments, the boss can also be formed as a cylinder, a cone, a truncated cone, or a pyramid. The shape of a pyramid is particularly advantageous compared to a cylinder or cone because it allows for a significant increase in the number of recognizable faces within the same area. In some embodiments, the top surface of the cylinder, truncated cone, or truncated pyramid is formed as a flat surface parallel to a plane. In some embodiments, the top surface of the cylinder, truncated cone, or truncated pyramid can be formed as a beveled surface at an angle to a plane.

[0046] In some embodiments, the scanning bar may be formed in a generally rectangular shape. In this case, the scanning portion 200 and the attachment portion 100 may have the same width. In some examples, the scanning bar may be formed in a shape with varying widths; the scanning portion 200 and the attachment portion 100 may have different widths, specifically, the maximum width of the scanning portion 200 is greater than the maximum width of the attachment portion 100. Figures 1-3 As shown, the attachment portion 100 has a first width W1, which is its maximum size (i.e., maximum width), in the width direction, and the scanning portion 200 has a second width W2, which is its maximum size in the width direction. The second width W2 is greater than the first width W1.

[0047] By making the maximum width W2 of the scanning unit 200 greater than the maximum width W1 of the attachment portion 100, it is beneficial to increase the scanning accuracy of the scanning unit. Considering the spatial constraints within the oral cavity, such as the dental arch and tongue, the shape of the scanning unit 200 needs to be designed to avoid interfering with the dental arch or tongue, thereby causing undue pressure on the patient. By designing the scanning bar to have a dimension that varies in the width direction, specifically making the maximum width of the scanning unit 200 greater than the width of the attachment portion 100, these increased widths will increase the scanning area of ​​the scanning unit 200.

[0048] The scanning unit 200 may include a first scanning area 210 adjacent to the attachment portion 100 and a second scanning area 220 distant from the attachment portion 100. The first scanning area 210 and the second scanning area 220 may be designed to have different widths. Specifically, the width of the scanning unit 200 in the region adjacent to the attachment portion 100 is smaller than the width in the region distant from the attachment portion 100. This is beneficial in further increasing the scanning accuracy of the scanning lever while ensuring minimal stress on the user. Figures 1-3 As shown, the first scanning area 210 has a maximum width W3 (i.e., the third width) in the width direction, and the maximum width of the second scanning area 220 in the width direction can correspond to the maximum width W2 (i.e., the second width) of the entire scanning section 200. The third width W3 is smaller than the second width W2.

[0049] In some embodiments, such as Figures 1-3 As shown, the maximum width W3 of the first scanning area 210 can be close to or equal to the maximum width W1 of the attachment portion 100. Considering the limited space of the dental arch, this arrangement reduces pressure on the dental arch space, allowing the area with increased scanning width to be located far from the dental arch and near the area of ​​the tongue surrounded by the dental arch. This minimizes the impact of the width variation of the scanning portion 200 on the extension of the scanning rod 1 within the oral cavity and on other scanning rods within the oral cavity.

[0050] The second scanning area 220 is not of constant width, but rather varies in width, which is beneficial for improving the applicability of the scanning bar. In some embodiments, such as Figures 1-3 As shown, the second scanning area 220 includes a first end adjacent to the first scanning area 210 and a second end away from the first scanning area 210. The second scanning area 220 includes a first size reduction portion 222. The width of the first size reduction portion 222 gradually decreases from the region adjacent to the first end toward the region adjacent to the second end in the width direction. Through this optimized arrangement of the shape, the pressure of the scanning bar on the area near the tongue can be reduced. This is because although it is beneficial for the scanning bar to be away from the dental arch, it should not be too far away from the dental arch. If the width of the portion is too far away from the dental arch, it will increase the pressure on the tongue and make the user feel uncomfortable; in addition, if the width of the portion is too far away from the dental arch, it will interfere with other scanning bars and affect the arrangement of other scanning bars. According to this disclosure, the above problems can be solved by the first size reduction portion 222.

[0051] In some embodiments, such as Figures 1-3As shown, the second scanning area 220 also includes a second-size reduction portion 224 located at the second end. The width of the second-size reduction portion 224 gradually decreases from the region adjacent to the first-size reduction portion 222 toward the end region of the adjacent elongated body. The two sides 221, 223 of the first-size reduction portion 222 form an included angle in the width direction. The two sides 225, 227 of the second-size reduction portion 224 form an included angle in the width direction. With this arrangement, the shape of the scanning bar at the end region of the scanning section 220 can be further optimized to improve the applicability of the scanning bar. In the illustrated embodiment, the width of the second-size reduction portion 224 gradually decreases from the region adjacent to the first-size reduction portion 222 toward the end region of the adjacent elongated body. It should be understood that the illustrated embodiment is merely exemplary, and in other embodiments (not shown), the width of the second-size reduction portion 224 gradually increases from the region adjacent to the first-size reduction portion 222 toward the end region of the adjacent elongated body.

[0052] In some embodiments, such as Figures 1-3 As shown, the second scan area 220 also includes a transition scan area 226 that transitions from the first scan area 210 to the second scan area 220. By providing a region of varying width through the transition scan area 226, the applicability of the scan bar is improved. The width of the transition scan area 226 gradually decreases from the region adjacent to the first scan area 210 toward the region adjacent to the second scan area 220, wherein the two sides 228, 229 of the transition scan area 226 in the width direction form an acute angle.

[0053] In some embodiments, the top surface 202 of the scanning unit 200 can be a flat surface. In other embodiments, the top surface 202 of the scanning unit 200 may not be a flat surface, but a surface with a certain angle (relative to the projection plane). Figures 1-3 In the illustrated embodiment, the entire area except for the bosses 410 and 420 is formed as a recognition surface. In other embodiments, the entire area of ​​the top surface 202 except for the bosses 410 and 420 is divided to form more recognition surfaces, for example, by dividing the top surface 202 into beveled surfaces with different inclinations.

[0054] In some embodiments, such as Figures 1-3 As shown, when the scanning unit 200 is provided with multiple bosses 410, 420, the multiple bosses 410, 420 can be formed with different sizes. This can further improve the accuracy when calculating based on the scanned data. In some embodiments, such as Figure 2As shown, the size of the boss 410 adjacent to the attachment portion 100 can be made smaller than the size of the boss 420 farther from the attachment portion 100, which allows the size of the identification surface of the boss 210 to be larger. Figure 2 As shown, the first boss 410 adjacent to the attachment portion 100 has a maximum width W4 (i.e., the fourth width) in the width direction, and the second boss and / or recess 420 has a maximum width W5 (i.e., the fifth width) in the width direction, and the fourth width W4 is smaller than the fifth width W5.

[0055] In some embodiments, at least one edge of the top surface 202 and / or bottom surface 204 of the elongated body is chamfered and / or blunted. This can improve security. In some embodiments, at least one edge of the top surface and / or bottom surface of the attachment portion 100 is also chamfered and / or blunted. Figure 4 and Figure 5 A general perspective view and a top view view of the dental scanning bar according to a second embodiment of the present disclosure are shown respectively. Figures 4-5 The illustrated embodiments and Figures 1-3 The illustrated embodiments are similar; descriptions of their identical parts are omitted, and the focus is on describing their differences. Similar to... Figures 1-3 Compared to the embodiments shown, Figures 4-5 The illustrated embodiment adds more recognition surfaces and optimizes the size of some of the recognition surfaces, which is beneficial for further improving the accuracy of calculations on scanned data.

[0056] In some embodiments, such as Figures 4-5 As shown, the bosses 410 and 420 can be disposed near one side edge of the top surface of the scanning unit 200 in the width direction. In this case, the edge of the top surface 202 of the scanning unit 200 (the side edge in the width direction and / or the edge in the length direction corresponding to the corresponding part of the scanning bar) can jointly define the recognition surface with the projected contours of the top surfaces 411 and 421 of the bosses 410 and 420 (which, for example, corresponds to the projected contours of the edges in the width direction and length direction of the top surfaces 411 and 421 of the bosses 410 and 420 in the top view) which can further increase the area of ​​the recognition surface without increasing the number of recognition surfaces.

[0057] In some embodiments, such as Figures 4-5As shown, the bosses 410 and 420 are formed in the shape of truncated pyramids. The projection of the boss 410 itself onto the projection plane and the top surface 202 form multiple recognition surfaces 411 (also referred to as the top surface 411 of the boss 410), 412, 414, and 415. Furthermore, the projection of the top surface 411 of the boss 410 onto the projection plane is separated from one side 251 of the scanning unit 200 in the width direction by a separation distance. The area where the separation distance is located is formed as a chamfered surface 307 connecting the corresponding top surface edge of the boss 410 and the side 251. With this arrangement, the size of the chamfered surface 307, which serves as the recognition surface, can be made larger. In some embodiments, the angle formed by the chamfered surface 307 with respect to the projection plane is in the range of 30° to 70°, particularly 45°, 55°, 60°, 65°, etc. In the embodiment shown, the chamfered surface 307 is formed as a single large-area chamfered surface. It should be understood that the illustrated embodiment is exemplary, and the beveled surface 307 can be further divided into multiple beveled surfaces, for example, by dividing the beveled surface into multiple regions with different inclinations.

[0058] Similarly, the projection of the boss 420 itself onto the projection plane and the top surface 202 form multiple recognition surfaces 421 (also referred to as the top surface 421 of the boss 420), 422, 424, and 425. Furthermore, the projection of the top surface 421 of the boss 420 onto the projection plane is separated from one side 223 of the scanning unit 200 in the width direction by a separation distance. The area containing the separation distance is formed as a chamfered surface 305 connecting the corresponding top surface edge of the boss 420 and one side 223. With this arrangement, the size of the chamfered surface 305, serving as the recognition surface, can be made larger. In some embodiments, the angle between the chamfered surface 307 and the projection plane is in the range of 30° to 70°, particularly 45°, 55°, 60°, 65°, etc. The angle of the chamfered surface 305 can be the same as or different from the angle of the chamfered surface 307. In the embodiment shown in the figure, the chamfered surface 305 is formed as a single large-area chamfered surface. It should be understood that the illustrated embodiment is exemplary, and the beveled surface 305 can be further divided into multiple beveled surfaces, for example, by dividing the beveled surface into multiple regions with different inclinations.

[0059] In addition to further structural improvements to the bosses 410 and 420, the contour shape of the scanning unit 200 can also be further optimized. In some embodiments, such as Figure 4 and Figure 5 As shown, the second-dimensional reduction section 224 of the scanning section 200 may also form one or more oblique surfaces 301, 302. For example... Figure 4 , Figure 5As shown, the two sides 225, 227 of the second size reduction portion 224 in the width direction and the top surface of the second scanning area 220 can be respectively formed as beveled surfaces 301, 302. In some embodiments, the angles formed by the beveled surfaces 301, 302 with respect to the projection plane are in the range of 30° to 70°, particularly 45°, 55°, 60°, 65°, etc. The angles of the beveled surfaces 301, 302 can be the same or different.

[0060] In some embodiments, such as Figure 4 and Figure 5 As shown, the transition scanning area 226 of the scanning unit 200 may also have one or more oblique surfaces 303. For example... Figure 4 , Figure 5 As shown, the top surface 202 of the scanning unit 200 can be formed in the form of a platform. The transition scanning region 226 includes a platform region that is part of the top surface 202 and a chamfered surface 303 disposed on one side of the platform region in the width direction. In some embodiments, such as Figure 4 , Figure 5 As shown, the top surface of the platform area is formed as a flat surface parallel to the projection plane. In other embodiments (not shown), the top surface of the platform area can be divided into multiple recognition surfaces by forming an angle with the projection plane. In some embodiments, the angle formed by the beveled surface 303 with respect to the projection plane is in the range of 30° to 70°, particularly 45°, 55°, 60°, 65°, etc. The angle of the beveled surface 303 may be the same as or different from that of the other beveled surfaces.

[0061] Figures 6-8 A dental scanning bar according to a third embodiment of the present disclosure is shown. Figures 6-7 The illustrated embodiments and Figures 6-8 The illustrated embodiments are similar; descriptions of their identical parts are omitted, and the focus is on describing their differences. Similar to... Figures 6-8 Compared to the embodiments shown, Figures 6-7 The illustrated embodiment adds more recognition surfaces and makes some of the recognition surfaces larger, which is beneficial for further improving the accuracy of calculations on scanned data.

[0062] In some embodiments, such as Figures 6-8 As shown, the bosses 410 and 420 can be arranged near the center of the scanning unit 200. The two side edges of the top surface 202 of the scanning unit 200 can jointly define the recognition surface with the projected contours of the top surfaces 411 and 421 of the bosses 410 and 420, which can further increase the area of ​​the recognition surface without increasing the number of recognition surfaces.

[0063] In some embodiments, such as Figures 6-8As shown, the bosses 410 and 420 are formed in the shape of truncated pyramids. The projection of the top surface 411 of the boss 410 onto the projection plane is separated from the two sides 251 and 252 of the scanning unit 200 in the width direction by a separation distance. The area where the separation distance is located is formed as a chamfered surface 307, 308 connecting the corresponding top surface edges 451 and 452 of the boss 410 and the sides 251 and 252. With this arrangement, recognition surfaces can be formed on both sides of the boss 410 in the width direction, and the number of recognition surfaces can be further increased. In some embodiments, the angles formed by the chamfered surfaces 307 and 308 with respect to the projection plane are in the range of 30° to 70°, particularly 45°, 55°, 60°, 65°, etc., and the angles of the chamfered surfaces 307 and 308 can be the same or different.

[0064] Similarly, the projection of the top surface 421 of the boss 420 onto the projection plane is separated from one of the sides 223, 221 of the scanning unit 200 in the width direction by a separation distance. The area where the separation distance is located is formed as a chamfered surface 305, 306 connecting the corresponding top surface edges 456, 457 of the boss 420 and the sides 223, 221. With this arrangement, recognition surfaces can be formed on both sides of the boss 410 in the width direction, and the number of recognition surfaces can be further increased. In some embodiments, the angles formed by the chamfered surfaces 305, 306 with respect to the projection plane are in the range of 30° to 70°, particularly 45°, 55°, 60°, 65°, and the angles of the chamfered surfaces 305, 306 can be the same or different.

[0065] In some embodiments, a plurality of protrusions 410, 420 are arranged sequentially along the length direction on the top surface 202 of the scanning unit 200, and the protrusions 410, 420 and the platform area 430 are alternately arranged. The platform area 430 has a height difference relative to the protrusions 410, 420. In some embodiments, the platform area 430 may be at the same height as the reference plane of other parts of the top surface 202 of the scanning unit 200, or it may be at a different height than the reference plane of other parts of the top surface 202 of the scanning unit 200. In the illustrated embodiment, it is separated by a platform area 430. It should be understood that multiple platform areas with different heights (e.g., two platform areas) can be used, and the multiple platforms may have the same shape or different shapes.

[0066] In some embodiments, the top surface 431 of the platform region 430 has a polygonal profile on the projection plane, and the polygonal profile has at least four sides. For example, it can have four sides, five sides, or more sides. The projection of the top surface 431 of the platform region 430 onto the projection plane is separated from at least one side edge 221, 223, 228, 229 of the scanning unit 200 in the width direction by a separation distance. The area where the second separation distance is located is formed as oblique cut surfaces 303, 304, 305, 306 connecting the edge of the top surface of the platform region 430 and at least one side edge 221, 223, 228, 229 of the scanning unit 200. The angles formed by the oblique cut surfaces 303, 304, 305, 306 with respect to the projection plane are in the range of 30° to 70°, particularly 45°, 55°, 60°, 65°, etc. The angles of the oblique cut surfaces 305 and 306 can be the same or different.

[0067] In the illustrated embodiment, the angle between the bevel formed by the contour edge of the platform area 430 and the sides 221, 223, 228, 229 of the scanning section 200 and the angle between the bevel formed by the bosses 410, 420 and the sides of the scanning section 200 is the same. It should be understood that this is merely exemplary, and the angle between the bevel formed by the contour edge of the platform area 430 and the sides 221, 223, 228, 229 of the scanning section 200 and the angle between the bevel formed by the bosses 410, 420 and the sides of the scanning section 200 may not be the same.

[0068] The arrangement of the recognition faces shown in the illustration is merely exemplary. In some embodiments, the number of recognition faces can be conveniently adjusted by changing the number of sides of the polygon outline of the platform area 430. In some embodiments, such as Figures 7-9 As shown, the platform area 430 is formed into a flat shape. It should be understood that the illustrated embodiment is merely exemplary, and the platform area 430 may be configured at an angle relative to the projection surface.

[0069] In some embodiments, the attachment portion 100 may also be provided with one or more identification surfaces. For example... Figure 4 , Figure 5 As shown, the attachment portion 100 may include a chamfered surface 506 at a location adjacent to the boss 410. In some embodiments, these chamfered surfaces 506 may be used to identify different scanning bars. For example, the chamfered surfaces 506 of different scanning bars may be set at different angles to distinguish the scanning bars from each other. The chamfered surfaces may also be provided at other locations. Figures 6-8As shown, the attachment portion 100 includes an attachment area 110 and a surrounding area 120 enclosing the attachment area 110 on its top surface. The surrounding area and the attachment area can be formed on different planes to provide identification surfaces. In some embodiments, the surrounding area 120 may include at least one beveled surface 501, 502, 503, 504, 505, 506, 507 at an angle to the projection plane. Two adjacent beveled surfaces may have different angles. These beveled surfaces can further increase the number of identification surfaces. The angles formed by the beveled surfaces 501, 502, 503, 504, 505, 506, 507 with respect to the projection plane are in the range of 30° to 70°, particularly 45°, 55°, 60°, 65°, etc.

[0070] Figure 9 and Figure 10 A side view and a cross-sectional view of a dental scanning bar according to a fourth embodiment of the present disclosure are shown, respectively. Figure 9 and Figure 10 The scanning bar shown is Figures 6-8 The scanning bar shown is similar. The difference lies in the structure of the cylindrical portion 130 of the attachment portion 100. For example... Figures 9-10 As shown, the shape of the cylindrical portion 130 can be further optimized to enhance the versatility of the scanning bar with different types of implants and / or implantation abutments.

[0071] According to this disclosure, a dental scanning system is also provided. In addition to an oral scanner, the dental scanning system may also include a plurality of dental scanning bars. In some embodiments, the dental scanning bars among the plurality of dental scanning bars may be formed to different lengths. Considering the different distances of the dental arch from the center of the oral cavity, by setting the scanning bars to different lengths, the coverage area of ​​the scanning bars in the oral cavity can be further increased while avoiding interference between the scanning bars and intraoral organs and between the scanning bars themselves. In some embodiments, the angles of the bevels at corresponding positions of scanning bars of different lengths are different from each other; in this case, the angles of the bevels can be used to identify different scanning bars.

[0072] From the teachings given in the foregoing description and related drawings, many modifications and other embodiments of the present disclosure will become apparent to those skilled in the art. Therefore, it is to be understood that embodiments of the present disclosure are not limited to the specific embodiments disclosed, and modifications and other embodiments are intended to be included within the scope of this disclosure. Furthermore, although the foregoing description and related drawings have described exemplary embodiments in the context of certain example combinations of components and / or functions, it should be appreciated that different combinations of components and / or functions may be provided by alternative embodiments without departing from the scope of this disclosure. In this regard, for example, other combinations of components and / or functions that differ from those explicitly described above are also contemplated within the scope of this disclosure. Although specific terms are used herein, they are used in a general and descriptive sense only and are not intended to be limiting.

Claims

1. A dental scanning bar (1), comprising: The attachment (100) is configured to attach the scanning bar to an implant or implant abutment located in the oral cavity; as well as The scanning unit (200) includes an elongated body extending laterally from the attachment unit (100), the elongated body having a length direction and a width direction, and including a top surface (202) and a bottom surface (204) opposite to the top surface (202), the top surface (202) including a plurality of recognition surfaces that assist scanning when scanning the scanning bar using a scanning device; The scanning unit (200) includes at least one boss and / or recess (410, 420) protruding from and / or recessed from the top surface (202), the boss and / or recess (410, 420) being shaped as a pyramid or truncated pyramid and the projection of each pyramid or truncated pyramid facet onto the top surface (202) forming the recognition surface. At least one of the bosses and / or recesses (410, 420) is formed in the shape of a truncated pyramid, and the top surface (411, 421) of the boss and / or recess (410, 420) is separated from the scanning part (200) by at least one side edge (251, 252, 221, 223) in the width direction by a first separation distance at the corresponding edge (451, 452, 456, 457) in the width direction. The area containing the first separation distance is formed as at least one first bevel (305, 306, 307, 308) connecting the corresponding edges (451, 452, 456, 457) of the top surface (411, 421) of the boss and / or recess (410, 420) and the at least one side edge (251, 252, 221, 223) of the scanning part (200), wherein the angle formed by the first bevel (305, 306, 307, 308) with respect to the projection plane is in the range of 45° to 70°.

2. The dental scanning bar according to claim 1, wherein the top surface (411, 421) of the boss and / or recess (410, 420) is separated from the first separation distance by the corresponding edge (451, 452, 456, 457) in the width direction by the two sides (251, 252, 221, 223) of the scanning part (200) in the width direction, wherein the area where the first separation distance is located is respectively formed as the first bevel surface (305, 306, 307, 308).

3. The dental scanning bar according to claim 1, wherein at least one of the bosses and / or recesses (410, 420) and at least one platform area (430) are arranged alternately along the length direction, the at least one platform area (430) having a different height relative to at least one of the bosses and / or recesses (410, 420).

4. The dental scanning bar according to claim 3, wherein the top surface (431) of the platform area (430) has a polygonal profile having at least four sides, and the corresponding edge of the top surface (431) of the platform area (430) in the width direction is separated from at least one side edge (221, 223, 228, 229) of the scanning part (200) in the width direction by a second separation distance, the area where the second separation distance is located is formed to connect at least one second chamfer (303, 304, 305, 306) of the corresponding edge of the top surface (431) of the platform area (430) in the width direction and the at least one side edge (221, 223, 228, 229) of the scanning part (200), the angle formed by the second chamfer (303, 304, 305, 306) with respect to the projection plane is in the range of 30° to 70°.

5. The dental scanning bar according to claim 4, wherein the corresponding edge of the top surface (431) of the platform area (430) in the width direction is separated from the two sides (221, 223, 228, 229) of the scanning part (200) in the width direction by the second separation distance, wherein the area where the second separation distance is located is respectively formed as the second oblique surface (303, 304, 305, 306).

6. The dental scanning bar according to claim 3, wherein the scanning part (200) includes at least two bosses and / or recesses (410, 420), wherein the first boss and / or recess (410) of the at least two bosses and / or recesses (410, 420) adjacent to the attachment part (100) has a fourth width (W4) as its maximum width in the width direction, and the second boss and / or recess (420) of the at least two bosses and / or recesses (410, 420) away from the attachment part (100) has a fifth width (W5) as its maximum width in the width direction, wherein the fourth width (W4) is smaller than the fifth width (W5).

7. The dental scanning bar according to any one of claims 1-6, wherein the scanning part (200) has a second width (W2) as its maximum width in the width direction, the attachment part (100) has a first width (W1) as its maximum width in the width direction, and the second width (W2) is greater than the first width (W1).

8. The dental scanning bar according to claim 7, wherein the scanning unit (200) includes a first scanning area (210) adjacent to the attachment portion (100) and a second scanning area (220) away from the attachment portion (100). The first scanning area (210) has a third width (W3) in the width direction, which is its maximum width in the width direction, and the second scanning area (220) has a maximum width in the width direction, which is the second width (W2), and the third width (W3) is smaller than the second width (W2).

9. The dental scanning bar according to claim 8, wherein the second scanning area (220) includes a first end adjacent to the first scanning area (210) and a second end away from the first scanning area (210), the second scanning area (220) including a first size reduction portion (222) the width of the first size reduction portion (222) in the width direction gradually decreases from the region adjacent to the first end toward the region adjacent to the second end.

10. The dental scanning bar according to claim 9, wherein the second scanning area (220) further includes a second size reduction portion (224) located at the second end, the width of the second size reduction portion (224) gradually decreasing from the region adjacent to the first size reduction portion (222) toward the end region adjacent to the scanning portion (200) in the width direction.

11. The dental scanning bar according to claim 10, wherein the region where the second size reduction portion (224) is located is formed as a third bevel (301, 302), the angle between the third bevel (301, 302) and the projection plane is in the range of 30° to 70°.

12. The dental scanning bar according to claim 8, wherein the second scanning area (220) further includes a transition scanning area (226) that transitions from the first scanning area (210) to the second scanning area (220), the width of the transition scanning area (226) in the width direction gradually decreasing from the region adjacent to the first scanning area (210) toward the region adjacent to the second scanning area (220).

13. The dental scanning bar according to claim 12, wherein the transition scanning area (226) includes a plateau area and at least one fourth oblique surface (303, 304) disposed at at least one edge in the width direction of the plateau area, the top surface of the plateau area being formed as a flat surface parallel to the projection plane or as an oblique surface at an angle to the projection plane, the angle of the fourth oblique surface (303, 304) relative to the projection plane being in the range of 30° to 70°.

14. The dental scanning bar according to any one of claims 1-6, 8-13, wherein the attachment portion (100) includes an attachment area (110) and a surrounding area (120) surrounding the attachment area (110) on its top surface, the attachment area (110) including a central hole (102), and the surrounding area (120) including at least one oblique cut surface (501, 502, 503, 504, 505, 506, 507) at an angle to the projection plane.

15. The dental scanning bar according to any one of claims 1-6, 8-13, wherein at least one edge of the top surface (202) and / or the bottom surface (204) of the elongated body is chamfered and / or blunted.

16. A dental scanning system, comprising: Dental scanner; At least two dental scanning bars (1) according to any one of claims 1-15, wherein the elongated bodies of the first and second dental scanning bars of the at least two dental scanning bars have different lengths.

17. A dental scanning system according to claim 16, wherein at least one bevel disposed in the first dental scanning bar and a corresponding bevel disposed at a corresponding position in the second dental scanning bar have different angles from each other.

Images